Electronic monitoring of antipsychotic medication adherence in outpatients with schizophrenia or schizoaffective disorder: An empirical evaluation of its reliability and predictive validity

Paul A. Nakonezny, Matthew J. Byerly, A. John Rush

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

This study examined the reliability and predictive validity of electronic monitoring (EM) in assessing the oral antipsychotic medication adherence of outpatients with schizophrenia or schizoaffective disorder. Sixty-one adult outpatients with schizophrenia or schizoaffective disorder who took a single oral antipsychotic medication were assessed monthly over a 6-month study period with EM of medication bottle opening. Symptom severity, as measured by the Positive and Negative Syndrome Scale (PANSS) total score, was assessed monthly over the 6-month study period. Cronbach's coefficient alpha revealed very high internal reliability (α = 0.94). A high degree of test-retest reliability was found (β ranged from 0.75 to 1.19 and r ranged from 0.63 to 0.90). As for predictive validity, greater mean EM adherence was significantly related to lower mean symptom severity.

Original languageEnglish (US)
Pages (from-to)259-263
Number of pages5
JournalPsychiatry research
Volume157
Issue number1-3
DOIs
StatePublished - Jan 15 2008

Keywords

  • Electronic monitoring
  • Medication adherence
  • Schizophrenia

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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